It should also be noted that they have now called it "A globally unique rollercoaster experience fusing wood and fire!", although "World’s first rollercoaster fusing wood and fire." does also feature on the site's Wicker Man FAQs.
It does say that, however it also says that “Wicker Man features state of the art special effects, including real and faux flames, to create the world’s first rollercoaster fusing wood and fire.”
Never really understood where the rumour that the ASA got involved came from, but honestly I highly doubted it then and now doubt it further as the ride is still marketed as a world's first attraction on the latest hotel ads and on the website itself!